/* 克莱因蓝 · 科技炫彩风 — 扩展配色体系 */
:root {
  --main-blue: #002FA7;
  --main-blue-deep: #001452;
  --main-blue-mid: #0038c8;
  --assist-silver: #C0C0C0;
  --assist-dark: #1e293b;
  --light-blue: #00BFFF;
  --accent-cyan: #00e5ff;
  --accent-sky: #38bdf8;
  --accent-indigo: #6366f1;
  --accent-violet: #8b5cf6;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --bg-white: #ffffff;
  --bg-gray: #eef4fc;
  --bg-blue-soft: #e3efff;
  --bg-blue-mist: #f0f7ff;
  --border-color: #c8d8ef;
  --border-light: rgba(0, 191, 255, 0.25);

  --gradient-hero: linear-gradient(
    128deg,
    var(--main-blue-deep) 0%,
    var(--main-blue) 32%,
    #0048d4 52%,
    color-mix(in srgb, var(--main-blue) 55%, var(--accent-indigo)) 68%,
    color-mix(in srgb, var(--light-blue) 75%, var(--main-blue)) 100%
  );
  --gradient-primary: linear-gradient(135deg, var(--main-blue) 0%, var(--main-blue-mid) 45%, var(--light-blue) 100%);
  --gradient-cta: linear-gradient(120deg, var(--accent-cyan) 0%, var(--light-blue) 40%, var(--main-blue) 100%);
  --gradient-section: linear-gradient(180deg, var(--bg-blue-mist) 0%, var(--bg-white) 55%, var(--bg-gray) 100%);
  --gradient-mesh: radial-gradient(ellipse 90% 60% at 10% 0%, rgba(0, 191, 255, 0.14), transparent 55%),
    radial-gradient(ellipse 70% 50% at 95% 20%, rgba(99, 102, 241, 0.1), transparent 50%),
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(0, 47, 167, 0.08), transparent 60%);

  --shadow-card: 0 12px 40px rgba(0, 47, 167, 0.1), 0 4px 14px rgba(0, 191, 255, 0.08);
  --shadow-soft: 0 8px 28px rgba(0, 47, 167, 0.14);
  --shadow-glow: 0 0 48px rgba(0, 229, 255, 0.22);
  --radius: 16px;
  --radius-pill: 999px;
  --header-h: 80px;
  --page-gutter: clamp(28px, 4vw, 80px);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg-white);
  background-image: var(--gradient-mesh);
  background-attachment: fixed;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--page-gutter);
}

/* ===== 按钮（药丸形） ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 32px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--bg-white);
  border-color: transparent;
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-pill-white {
  background: linear-gradient(135deg, #ffffff 0%, #e8f7ff 100%);
  color: var(--main-blue);
  border-color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  font-size: 13px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

.btn-pill-white:hover {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-cyan) 120%);
  color: var(--main-blue-deep);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-outline-light {
  background: transparent;
  color: var(--bg-white);
  border-color: rgba(255, 255, 255, 0.65);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--bg-white);
}

.btn-block { width: 100%; }

/* ===== 顶栏（默认磨砂浅底，Hero 上亦保证 logo / 语言按钮清晰） ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: var(--transition);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px) saturate(1.15);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  border-bottom: 1px solid rgba(0, 47, 167, 0.08);
  box-shadow: 0 2px 18px rgba(0, 47, 167, 0.07);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--page-gutter);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo-icon {
  width: 42px;
  height: 42px;
  color: var(--main-blue);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.logo-text strong {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

.logo-text small {
  font-size: 10px;
  font-weight: 400;
  color: var(--text-secondary);
}

.logo-text strong { color: var(--main-blue); }

.header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 30px rgba(0, 47, 167, 0.1);
  border-bottom-color: var(--border-light);
}

.nav { flex: 1; display: flex; justify-content: center; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
}

.header .nav-link { color: var(--assist-dark); }

.header .nav-link:hover,
.header .nav-link.active {
  color: var(--main-blue);
  background: linear-gradient(135deg, var(--bg-blue-soft) 0%, rgba(0, 191, 255, 0.1) 100%);
}

.nav-item-dropdown { position: relative; }

/* 面板紧贴导航项，padding-top 作透明悬停桥，避免移入二级菜单时断开 hover */
.dropdown-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 300px;
  padding: 12px 0 0;
  background: transparent;
  border: none;
  box-shadow: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
  pointer-events: none;
  z-index: 1100;
}

.dropdown-grid {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  padding: 10px;
  overflow: visible;
}

.nav-item-dropdown,
.dropdown-panel,
.dropdown-grid {
  overflow: visible;
}

.nav-item-dropdown.open .dropdown-panel,
.nav-item-dropdown:hover .dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* 二级菜单列表 */
.dropdown-menu-l2 {
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 300px;
}

.dropdown-l2-item {
  position: relative;
}

.dropdown-l2-row {
  display: flex;
  align-items: stretch;
}

.dropdown-l2-link {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 10px 12px 14px;
  border-radius: 10px;
  color: var(--text-primary);
  transition: var(--transition);
  min-width: 0;
}

.dropdown-l2-link:hover,
.dropdown-l2-item.l3-open > .dropdown-l2-row .dropdown-l2-link {
  background: linear-gradient(90deg, var(--bg-blue-soft) 0%, transparent 100%);
  color: var(--main-blue);
}

.dropdown-l2-text strong { display: block; font-size: 14px; }
.dropdown-l2-text small {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.dropdown-l2-expand {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 0 10px 10px 0;
  transition: var(--transition);
}

.dropdown-l2-expand:hover {
  background: var(--bg-blue-soft);
  color: var(--main-blue);
}

/* 三级菜单：悬停时在二级项右侧飞出，不占位、不遮挡下方二级项 */
.dropdown-l2-item.l3-open,
.dropdown-l2-item:hover {
  z-index: 5;
}

.dropdown-menu-l3 {
  list-style: none;
  margin: 0;
  padding: 0;
  position: absolute;
  left: calc(100% + 6px);
  top: 0;
  min-width: 240px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  transform: translateX(-6px);
  z-index: 1200;
}

.dropdown-menu-l3::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 0;
  bottom: 0;
  width: 8px;
}

.dropdown-l2-item .dropdown-menu-l3 {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  padding: 8px;
}

.dropdown-menu-l3 > li > a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--assist-dark);
  white-space: nowrap;
  border-radius: 8px;
  transition: var(--transition);
}

.dropdown-menu-l3 > li > a:hover {
  color: var(--main-blue);
  background: var(--bg-white);
}

.dropdown-l2-item:hover > .dropdown-menu-l3,
.dropdown-l2-item.l3-open > .dropdown-menu-l3,
.dropdown-l2-item:focus-within > .dropdown-menu-l3 {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0);
}

/* 靠下的二级项：三级向左展开，避免超出屏幕 */
.dropdown-l2-item:nth-last-child(-n+1) .dropdown-menu-l3 {
  left: auto;
  right: calc(100% + 6px);
  transform: translateX(6px);
}

.dropdown-l2-item:nth-last-child(-n+1) .dropdown-menu-l3::before {
  left: auto;
  right: -8px;
}

.dropdown-l2-item:nth-last-child(-n+1):hover > .dropdown-menu-l3,
.dropdown-l2-item:nth-last-child(-n+1).l3-open > .dropdown-menu-l3,
.dropdown-l2-item:nth-last-child(-n+1):focus-within > .dropdown-menu-l3 {
  transform: translateX(0);
}

.dropdown-catalog-link {
  display: block;
  margin-top: 8px;
  padding: 12px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--main-blue);
  text-align: center;
  border-radius: 10px;
  border-top: 1px solid var(--border-color);
  transition: var(--transition);
}

.dropdown-catalog-link:hover {
  background: var(--bg-blue-soft);
  color: var(--light-blue);
}

.dropdown-icon { font-size: 20px; width: 32px; text-align: center; flex-shrink: 0; }

/* 兼容旧版扁平项（若仍存在） */
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  color: var(--text-primary);
  cursor: pointer;
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.dropdown-item:hover {
  background: linear-gradient(90deg, var(--bg-blue-soft) 0%, transparent 100%);
  color: var(--main-blue);
}

.dropdown-item strong { display: block; font-size: 14px; }
.dropdown-item small { font-size: 12px; color: var(--text-secondary); }

.header-cta { flex-shrink: 0; }

.lang-switch {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 36px;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 999px;
  border: 1px solid rgba(0, 47, 167, 0.18);
  color: var(--main-blue);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 6px rgba(0, 47, 167, 0.08);
  transition: var(--transition);
}

.lang-switch:hover {
  background: var(--bg-light);
  border-color: var(--light-blue);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}

.menu-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  transition: var(--transition);
}

.header .menu-toggle span { background: var(--assist-dark); }

.menu-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ===== Hero 业务轮播（初版：背景图 + 渐变遮罩 + 光晕） ===== */
.hero.hero-carousel {
  position: relative;
  min-height: 100vh;
  padding-top: var(--header-h);
  overflow: hidden;
  background: var(--main-blue-deep);
}

.hero-carousel .hero-slides {
  position: relative;
  min-height: calc(100vh - var(--header-h));
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.75s ease, visibility 0.75s;
}

.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
}

.hero-slide-media {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.08);
  transition: transform 7s ease-out;
}

.hero-slide.is-active .hero-slide-media {
  transform: scale(1);
}

.hero-slide-media--hd {
  background-size: cover;
  background-position: center center;
}

.hero-slide-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(
    105deg,
    rgba(0, 20, 82, 0.9) 0%,
    rgba(0, 47, 167, 0.72) 38%,
    rgba(0, 47, 167, 0.4) 62%,
    rgba(0, 72, 212, 0.25) 100%
  );
}

.hero-slide-overlay--lighter {
  background: linear-gradient(
    105deg,
    rgba(0, 20, 82, 0.72) 0%,
    rgba(0, 47, 167, 0.52) 38%,
    rgba(0, 47, 167, 0.26) 62%,
    rgba(0, 72, 212, 0.12) 100%
  );
}

.hero-slide-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  grid-template-columns: 1fr;
  min-height: calc(100vh - var(--header-h));
  padding-bottom: 160px;
}

.hero-slide-inner .hero-content {
  max-width: 42rem;
  animation: hero-text-in 0.7s ease 0.15s both;
}

.hero-slide:not(.is-active) .hero-content {
  animation: none;
}

@keyframes hero-text-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-carousel .hero-blob {
  z-index: 2;
  pointer-events: none;
  opacity: 0.35;
}

.hero-controls {
  position: absolute;
  left: 50%;
  bottom: 128px;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 20px;
}

.hero-arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.1);
  color: var(--bg-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.hero-arrow:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
}

.hero-dots {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: rgba(0, 20, 82, 0.45);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: var(--transition);
}

.hero-dot.is-active {
  width: 28px;
  border-radius: var(--radius-pill);
  background: var(--gradient-cta);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
}

.hero-dot:hover:not(.is-active) {
  background: rgba(255, 255, 255, 0.6);
}

.hero-progress {
  position: absolute;
  left: var(--page-gutter);
  right: var(--page-gutter);
  bottom: 118px;
  z-index: 4;
  height: 3px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 2px;
  overflow: hidden;
}

.hero-progress-bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent-cyan), var(--light-blue));
  border-radius: 2px;
}

.hero-carousel.is-playing .hero-progress-bar {
  animation: hero-progress-fill 2s linear forwards;
}

@keyframes hero-progress-fill {
  to { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-slide,
  .hero-slide-media,
  .hero-slide-inner .hero-content {
    transition: none;
    animation: none;
  }

  .hero-carousel.is-playing .hero-progress-bar {
    animation: none;
    width: 100%;
  }
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 0.65;
  animation: blob-float 12s ease-in-out infinite;
}

.hero-blob-1 {
  width: 55vw;
  height: 55vw;
  max-width: 700px;
  max-height: 700px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.55) 0%, rgba(0, 191, 255, 0.15) 40%, transparent 70%);
  top: -15%;
  right: -10%;
}

.hero-blob-2 {
  width: 40vw;
  height: 40vw;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.4) 0%, rgba(0, 47, 167, 0.2) 50%, transparent 68%);
  bottom: 10%;
  left: -8%;
  animation-delay: -4s;
}

@keyframes blob-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(2%, -3%) scale(1.05); }
}

.hero-curve {
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  line-height: 0;
  z-index: 5;
  pointer-events: none;
}

.hero-curve svg {
  display: block;
  width: 100%;
  height: auto;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 48px var(--page-gutter) 140px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  min-height: calc(100vh - var(--header-h));
}

.hero-content { color: var(--bg-white); }

.hero-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  color: var(--accent-cyan);
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid rgba(0, 229, 255, 0.35);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.15);
}

.hero-content h1,
.hero-content .hero-title {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  background: linear-gradient(105deg, #ffffff 0%, #d4f4ff 45%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.88);
  max-width: 480px;
  margin-bottom: 36px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-orbit {
  position: relative;
  width: min(420px, 90vw);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-orbit::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--light-blue) 45%, transparent) 0%, transparent 68%);
  animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50% { transform: scale(1.04); opacity: 1; }
}

.hero-illustration {
  position: relative;
  width: 78%;
  height: 78%;
  z-index: 1;
}

/* ===== 区块标题 ===== */
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-head h2 {
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--main-blue-deep) 0%, var(--main-blue) 50%, var(--accent-indigo) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-head h2::after {
  content: '';
  display: block;
  width: 56px;
  height: 4px;
  margin: 16px auto 0;
  border-radius: 2px;
  background: var(--gradient-cta);
}

.section-head p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--main-blue);
  margin-bottom: 10px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--bg-blue-soft) 0%, rgba(0, 191, 255, 0.12) 100%);
  border: 1px solid var(--border-light);
}

.section { padding: 88px 0; }

/* ===== 产品与服务（三列卡片） ===== */
.services {
  background: var(--gradient-section);
  padding-top: 100px;
  margin-top: -40px;
  position: relative;
  z-index: 4;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--light-blue), var(--accent-indigo), transparent);
  opacity: 0.6;
}

.service-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(165deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
  border-radius: var(--radius);
  padding: 36px 28px 32px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-cta);
  opacity: 0.85;
}

.service-card:nth-child(1)::before {
  background: linear-gradient(90deg, var(--main-blue), var(--light-blue));
}

.service-card:nth-child(2)::before {
  background: linear-gradient(90deg, var(--accent-indigo), var(--accent-violet));
}

.service-card:nth-child(3)::before {
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-sky));
}

.service-card-img {
  width: calc(100% + 56px);
  max-width: none;
  margin: -36px -28px 20px;
  height: auto;
  aspect-ratio: 520 / 200;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius) var(--radius) 0 0;
  display: block;
}

.service-card::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -30%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 191, 255, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-glow), var(--shadow-card);
}

.service-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 22px;
  padding: 10px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0, 47, 167, 0.08) 0%, rgba(0, 191, 255, 0.15) 100%);
  color: var(--main-blue);
  box-shadow: inset 0 0 0 1px var(--border-light);
}

.service-card:nth-child(2) .service-icon {
  color: var(--accent-indigo);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.12) 100%);
}

.service-card:nth-child(3) .service-icon {
  color: var(--accent-cyan);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.1) 0%, rgba(56, 189, 248, 0.12) 100%);
}

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--main-blue);
  margin-bottom: 18px;
}

.service-card ul li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.55;
}

.service-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--light-blue);
}

/* 互联网子服务 */
.internet-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--border-color);
}

.internet-item {
  text-align: center;
  padding: 24px 16px;
  background: linear-gradient(160deg, var(--bg-white) 0%, var(--bg-blue-soft) 100%);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.internet-item:nth-child(odd):hover {
  border-color: var(--light-blue);
  box-shadow: 0 8px 28px rgba(0, 191, 255, 0.2);
}

.internet-item:nth-child(even):hover {
  border-color: var(--accent-indigo);
  box-shadow: 0 8px 28px rgba(99, 102, 241, 0.18);
}

.internet-item:hover {
  background: var(--bg-white);
  transform: translateY(-4px);
}

.internet-item .icon {
  font-size: 28px;
  margin-bottom: 10px;
  display: block;
}

.internet-item--photo {
  padding: 0;
  overflow: hidden;
  text-align: left;
}

.internet-item-photo {
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  display: block;
}

.internet-item--photo strong,
.internet-item--photo > span:last-child {
  display: block;
  padding: 0 16px;
}

.internet-item--photo strong {
  margin-top: 12px;
  font-size: 14px;
}

.internet-item--photo > span:last-child {
  padding-bottom: 16px;
  font-size: 12px;
}

.internet-item strong {
  display: block;
  font-size: 14px;
  color: var(--main-blue);
}

.internet-item span {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
  display: block;
}

/* ===== 公司简介 ===== */
.about {
  position: relative;
  background: linear-gradient(160deg, var(--bg-gray) 0%, var(--bg-blue-mist) 40%, var(--bg-blue-soft) 100%);
  overflow: hidden;
}

.about::before {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  top: -120px;
  right: -80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 191, 255, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.about::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  bottom: -60px;
  left: -40px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.about .container {
  position: relative;
  z-index: 1;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}

.about-content p {
  margin-bottom: 18px;
  color: var(--assist-dark);
  font-size: 15px;
  line-height: 1.85;
  text-align: justify;
}

.about-content p:last-of-type {
  margin-bottom: 0;
}

.about-content strong { color: var(--main-blue); }

.about-core-label,
.about-core-name {
  color: var(--main-blue);
  font-weight: 700;
}

.about-card--core h4 {
  color: var(--main-blue);
}

.about-card--core li {
  color: var(--main-blue);
  font-weight: 600;
}

.about-card--core li::before {
  color: var(--light-blue);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--assist-silver);
}

.about-stats li { text-align: center; }

.stat-num {
  font-size: 36px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--main-blue) 0%, var(--light-blue) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-suffix {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-cyan);
}

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 6px;
}

.about-card {
  background: linear-gradient(135deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--main-blue);
}

.about-card.accent {
  border-left-color: var(--accent-violet);
  background: linear-gradient(135deg, var(--bg-white) 0%, rgba(139, 92, 246, 0.06) 100%);
}

.about-card h4 {
  font-size: 17px;
  color: var(--main-blue);
  margin-bottom: 14px;
}

.about-card li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.about-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--light-blue);
  font-weight: 700;
}

/* ===== 产品详情（浅色卡片网格） ===== */
.product-detail {
  padding: 64px 0 88px;
}

section.product-detail {
  background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
}

section.product-detail ~ section.product-detail {
  background: linear-gradient(180deg, var(--bg-blue-soft) 0%, var(--bg-white) 100%);
}

.product-detail + .product-detail { padding-top: 0; }

.product-detail-head {
  margin-bottom: 32px;
}

.product-detail-head h3 {
  font-size: 24px;
  color: var(--main-blue);
  margin-bottom: 8px;
}

.product-detail-head p { color: var(--text-secondary); font-size: 15px; }

.detail-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.detail-card {
  padding: 24px;
  background: linear-gradient(145deg, var(--bg-white) 0%, var(--bg-gray) 100%);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.detail-card:hover {
  background: var(--bg-white);
  box-shadow: var(--shadow-soft);
  border-color: var(--border-light);
  transform: translateY(-4px);
}

.detail-card:nth-child(4n+1):hover { border-color: rgba(0, 47, 167, 0.4); }
.detail-card:nth-child(4n+2):hover { border-color: rgba(0, 191, 255, 0.5); }
.detail-card:nth-child(4n+3):hover { border-color: rgba(99, 102, 241, 0.45); }
.detail-card:nth-child(4n+4):hover { border-color: rgba(0, 229, 255, 0.5); }

.detail-card .icon { font-size: 32px; margin-bottom: 12px; }
.detail-card h4 { font-size: 16px; color: var(--main-blue); margin-bottom: 8px; }
.detail-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* ===== 合作伙伴 Logo 墙 ===== */
.partners {
  background: linear-gradient(180deg, var(--bg-blue-mist) 0%, var(--bg-gray) 50%, var(--bg-blue-soft) 100%);
}

.partner-logos {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  max-width: 1120px;
  margin: 0 auto;
}

.partner-logo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 110px;
  padding: 24px 20px;
  background: linear-gradient(160deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.partner-logo-item:hover {
  transform: translateY(-6px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-glow), var(--shadow-card);
}

.partner-logo-item img {
  max-width: 140px;
  max-height: 48px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(0%);
  opacity: 0.92;
  transition: var(--transition);
}

.partner-logo-item img[src$=".ico"] {
  max-width: 56px;
  max-height: 56px;
}

.partner-logo-item img[src*="dahua.svg"] {
  max-width: 200px;
  max-height: 48px;
  opacity: 1;
  filter: none;
}

.partner-logo-item img[src*="bytedance.svg"] {
  max-width: 150px;
  max-height: 40px;
}

.partner-logo-item img[src*="hikvision.svg"] {
  max-width: 160px;
  max-height: 36px;
}

.partner-logo-item:hover img {
  opacity: 1;
}

.partners-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 28px;
}

/* ===== 联系我们 ===== */
.contact {
  position: relative;
  background: linear-gradient(180deg, var(--bg-blue-mist) 0%, var(--bg-white) 45%, var(--bg-gray) 100%);
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: min(900px, 90vw);
  height: 400px;
  background: radial-gradient(ellipse, rgba(0, 191, 255, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.contact .container {
  position: relative;
  z-index: 1;
}

.contact-panel {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  padding: 40px 40px 36px;
  background: var(--bg-white);
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.contact-panel-accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-cta);
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.contact-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 22px 20px;
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-soft);
  transform: translateY(-3px);
}

.contact-card--wide {
  grid-column: 1 / -1;
}

/* 公司地址：地图背景 + 前景信息 */
.contact-card--address {
  position: relative;
  display: block;
  min-height: 220px;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--main-blue) 18%, var(--border-color));
  background: var(--bg-white);
  overflow: hidden;
}

.contact-card--address:hover {
  transform: none;
  box-shadow: var(--shadow-glow), var(--shadow-card);
}

.contact-address-map {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  min-height: 220px;
  background-color: var(--bg-blue-mist);
  background-image: image-set(url('assets/contact/map-bg.webp') type('image/webp'), url('assets/contact/map-bg.jpg') type('image/jpeg')), url('assets/contact/map-bg.svg');
  background-size: cover;
  background-position: 58% 42%;
  background-repeat: no-repeat;
}

.contact-address-map::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(255, 255, 255, 0.97) 0%, rgba(255, 255, 255, 0.92) 38%, rgba(240, 248, 255, 0.55) 62%, rgba(240, 248, 255, 0.25) 100%),
    linear-gradient(0deg, rgba(0, 47, 167, 0.06) 0%, transparent 45%);
  pointer-events: none;
}

.contact-address-content {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 28px 26px;
  max-width: min(100%, 520px);
}

.contact-card--address .contact-card-icon {
  background: var(--bg-white);
  box-shadow: 0 6px 18px rgba(0, 47, 167, 0.12);
}

.contact-map-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--main-blue);
  pointer-events: auto;
  transition: var(--transition);
}

.contact-map-link::after {
  content: '→';
  transition: transform var(--transition);
}

.contact-map-link:hover {
  color: var(--light-blue);
}

.contact-map-link:hover::after {
  transform: translateX(3px);
}

.contact-card--highlight {
  background: linear-gradient(145deg, var(--bg-blue-soft) 0%, var(--bg-white) 100%);
  border-color: color-mix(in srgb, var(--main-blue) 25%, var(--border-color));
}

.contact-card--highlight .contact-card-icon {
  background: var(--gradient-primary);
  color: var(--bg-white);
  box-shadow: 0 6px 20px rgba(0, 47, 167, 0.25);
}

.contact-card-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-white);
  color: var(--main-blue);
  border: 1px solid var(--border-light);
  box-shadow: 0 4px 12px rgba(0, 47, 167, 0.08);
}

.contact-card-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.contact-card-value {
  font-size: 16px;
  font-weight: 500;
  color: var(--assist-dark);
  line-height: 1.65;
  margin: 0;
}

.contact-card-value a {
  color: var(--main-blue);
  font-weight: 600;
  transition: color var(--transition);
}

.contact-card-value a:hover {
  color: var(--light-blue);
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  padding-top: 28px;
  border-top: 1px solid var(--border-color);
}

.btn-contact-mail {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  border: 2px solid var(--main-blue);
  color: var(--main-blue);
  background: var(--bg-white);
  transition: var(--transition);
}

.btn-contact-mail:hover {
  background: var(--bg-blue-soft);
  border-color: var(--light-blue);
  color: var(--main-blue-mid);
  box-shadow: var(--shadow-soft);
}

/* 旧表单样式保留（若复用） */
.contact-form {
  background: linear-gradient(145deg, var(--bg-white) 0%, var(--bg-blue-soft) 100%);
  padding: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
}

.form-row { margin-bottom: 18px; }

.form-row label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--assist-dark);
  margin-bottom: 8px;
}

.form-row label span { color: #e53935; }

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 14px 16px;
  font-size: 15px;
  font-family: inherit;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-white);
  transition: var(--transition);
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--light-blue);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--light-blue) 22%, transparent);
}

.form-row textarea { min-height: 120px; resize: vertical; }

.form-tip {
  margin-top: 12px;
  font-size: 14px;
  text-align: center;
  min-height: 20px;
}

.form-tip.success { color: #2e7d32; }
.form-tip.error { color: #c62828; }

/* ===== 页脚 ===== */
.footer {
  position: relative;
  background: linear-gradient(180deg, var(--main-blue-deep) 0%, var(--main-blue) 40%, color-mix(in srgb, var(--main-blue) 80%, var(--accent-indigo)) 100%);
  color: rgba(255, 255, 255, 0.88);
  padding: 32px 0;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--light-blue), var(--accent-violet));
}

.footer-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bar p { font-size: 14px; }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--light-blue); }

/* ===== 返回顶部 ===== */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: var(--bg-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: var(--transition);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--gradient-cta);
  color: var(--main-blue-deep);
  transform: translateY(-4px);
}

/* ===== 滚动显现 ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-carousel .hero-slide-inner {
    text-align: center;
    justify-content: center;
    padding-bottom: 180px;
  }

  .hero-carousel .hero-slide-inner .hero-content {
    margin: 0 auto;
    max-width: 100%;
  }

  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-controls { bottom: 110px; }
  .hero-progress { bottom: 96px; }
  .service-cards { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .internet-grid { grid-template-columns: repeat(3, 1fr); }
  .detail-cards { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .contact-card--wide { grid-column: auto; }
  .contact-panel { padding: 28px 22px 24px; }
  .partner-logos {
    grid-template-columns: repeat(2, 1fr);
    max-width: none;
  }
}

@media (max-width: 768px) {
  :root { --header-h: 68px; }

  .header-cta { display: none; }

  .menu-toggle { display: flex; }

  .lang-switch {
    margin-left: auto;
    margin-right: 8px;
    min-width: 36px;
    height: 32px;
    font-size: 12px;
  }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-white);
    padding: 24px;
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
    justify-content: flex-start;
  }

  .nav.open { transform: translateX(0); }

  .nav-list { flex-direction: column; align-items: stretch; width: 100%; }

  .nav-link {
    color: var(--assist-dark) !important;
    background: transparent !important;
    padding: 14px 16px;
  }

  .nav-link:hover,
  .nav-link.active {
    background: var(--bg-gray) !important;
    color: var(--main-blue) !important;
  }

  .dropdown-panel {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    padding: 0 0 0 12px;
    pointer-events: auto;
    display: none;
  }

  .nav-item-dropdown.open .dropdown-panel { display: block; }

  .dropdown-grid {
    box-shadow: none;
    border: none;
    padding: 8px 0;
  }

  .dropdown-l2-expand {
    display: flex;
  }

  .dropdown-menu-l3 {
    position: static;
    left: auto;
    right: auto;
    padding: 0 0 8px 44px;
    min-width: 0;
    opacity: 1;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    pointer-events: none;
    transform: none;
    transition: max-height 0.3s ease, visibility 0.2s;
  }

  .dropdown-l2-item.l3-open > .dropdown-menu-l3 {
    visibility: visible;
    max-height: 320px;
    pointer-events: auto;
  }

  .dropdown-menu-l3 > li > a {
    border: none;
    box-shadow: none;
    background: var(--bg-gray);
    margin-bottom: 6px;
  }

  .hero-carousel .hero-slide-inner { padding-bottom: 120px; min-height: auto; }
  .hero-carousel .hero-slides { min-height: auto; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .internet-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-cards { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 20px; }
  .contact-actions { flex-direction: column; }
  .contact-actions .btn { width: 100%; }
  .contact-card--address {
    min-height: 280px;
  }

  .contact-address-map {
    min-height: 280px;
  }

  .contact-address-map::after {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.97) 0%, rgba(255, 255, 255, 0.9) 50%, rgba(240, 248, 255, 0.45) 100%),
      linear-gradient(0deg, rgba(0, 47, 167, 0.06) 0%, transparent 40%);
  }

  .contact-address-content {
    max-width: 100%;
    padding: 22px 18px;
  }

  .footer-bar { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .internet-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
}

/* ===== 桌面端满屏宽度 ===== */
@media (min-width: 1025px) {
  :root {
    --page-gutter: clamp(40px, 5vw, 96px);
  }

  .container,
  .header-inner {
    max-width: none;
    width: 100%;
  }

  .hero-carousel .hero-slide-inner {
    padding-top: 48px;
    padding-bottom: 180px;
  }

  .hero-carousel .hero-slide-inner .hero-content {
    max-width: min(34rem, 38vw);
  }

  .hero-desc {
    max-width: 36rem;
  }

  .hero-controls {
    bottom: 140px;
  }

  .hero-progress {
    bottom: 128px;
  }

  .section {
    padding: clamp(88px, 8vw, 120px) 0;
  }

  .section-head {
    max-width: 52rem;
    margin-bottom: clamp(48px, 5vw, 72px);
  }

  .service-cards {
    gap: clamp(24px, 2.5vw, 40px);
  }

  .internet-grid {
    gap: clamp(16px, 1.8vw, 28px);
  }

  .detail-cards {
    gap: clamp(20px, 2vw, 32px);
  }

  .about-grid {
    gap: clamp(40px, 5vw, 80px);
  }

  .partner-logos {
    max-width: none;
    gap: clamp(20px, 2vw, 32px);
  }

  .contact-panel {
    max-width: none;
    width: 100%;
    padding: clamp(40px, 4vw, 56px) clamp(40px, 4vw, 64px);
  }

  .contact-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-card--wide {
    grid-column: 1 / -1;
  }
}

/* ===== 内页：服务详情 / 目录 ===== */
body.page-inner { padding-top: var(--header-h); }

body.page-inner .header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px) saturate(1.2);
  box-shadow: 0 4px 30px rgba(0, 47, 167, 0.08);
  border-bottom: 1px solid var(--border-light);
}

body.page-inner .logo-icon { color: var(--main-blue); }
body.page-inner .logo-text strong { color: var(--main-blue); }
body.page-inner .logo-text small { color: var(--text-secondary); }
body.page-inner .nav-link { color: var(--assist-dark); }
body.page-inner .nav-link:hover,
body.page-inner .nav-link.active {
  color: var(--main-blue);
  background: linear-gradient(135deg, var(--bg-blue-soft) 0%, rgba(0, 191, 255, 0.1) 100%);
}
body.page-inner .menu-toggle span { background: var(--assist-dark); }
body.page-inner .lang-switch {
  color: var(--main-blue);
  border-color: rgba(0, 47, 167, 0.18);
  background: rgba(255, 255, 255, 0.95);
}
body.page-inner .header-cta {
  background: var(--gradient-primary);
  color: var(--bg-white);
  border-color: transparent;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: var(--main-blue);
  transition: color var(--transition);
}

.breadcrumb a:hover { color: var(--light-blue); }
.breadcrumb span[aria-hidden="true"] { opacity: 0.5; }

.service-hero {
  position: relative;
  padding: 56px 0 64px;
  background: var(--gradient-hero);
  overflow: hidden;
}

.service-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.6;
}

.service-hero .container {
  position: relative;
  z-index: 1;
}

.service-hero .breadcrumb a,
.service-hero .breadcrumb span { color: rgba(255, 255, 255, 0.75); }
.service-hero .breadcrumb a:hover { color: var(--accent-cyan); }

.service-hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}

.service-hero-media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-glow), 0 16px 48px rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.2);
  max-width: 420px;
  width: 100%;
  justify-self: end;
}

.service-hero-media img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 520 / 360;
  object-fit: cover;
}

.service-hero-media--photo img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
}

.service-showcase {
  margin: 0 0 48px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  background: var(--bg-blue-mist);
}

.service-showcase img {
  width: 100%;
  height: auto;
  display: block;
  max-height: 400px;
  object-fit: cover;
  aspect-ratio: 12 / 5;
}

.service-showcase--photo img {
  max-height: 520px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: center;
}

.service-showcase figcaption {
  padding: 14px 20px;
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  background: linear-gradient(90deg, var(--bg-blue-soft), var(--bg-white), var(--bg-blue-soft));
  border-top: 1px solid var(--border-color);
}

.service-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.service-hero-lead {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.88);
  max-width: 640px;
  line-height: 1.75;
}

.service-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.service-tag {
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(0, 229, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 229, 255, 0.35);
}

.service-body { padding: 64px 0 80px; }

.service-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.service-block {
  margin-bottom: 56px;
}

.service-block h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--main-blue);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--bg-blue-soft);
}

.service-block p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
}

/* 域名查询（新网 www.net.cn） */
.domain-query-block {
  padding: 28px;
  background: linear-gradient(160deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.domain-query-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.domain-query-input {
  flex: 1;
  min-width: 200px;
  padding: 14px 18px;
  font-size: 16px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-white);
  color: var(--text-primary);
  transition: var(--transition);
}

.domain-query-input:focus {
  outline: none;
  border-color: var(--main-blue);
  box-shadow: 0 0 0 3px var(--bg-blue-soft);
}

.domain-query-submit {
  flex-shrink: 0;
  padding: 14px 28px;
}

.domain-query-suffixes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.domain-suffix-chip {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.domain-suffix-chip input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.domain-suffix-chip span {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--bg-white);
  color: var(--text-secondary);
  transition: var(--transition);
}

.domain-suffix-chip input:checked + span {
  border-color: var(--main-blue);
  background: var(--bg-blue-soft);
  color: var(--main-blue);
  font-weight: 600;
}

.domain-query-status {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--text-secondary);
  min-height: 1.4em;
}

.domain-query-status--error {
  color: #c2410c;
}

.domain-query-results {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.domain-result-row {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) auto 1fr auto;
  gap: 12px 16px;
  align-items: center;
  padding: 14px 16px;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  font-size: 14px;
}

.domain-result-name {
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-all;
}

.domain-status {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.domain-status--available {
  background: #dcfce7;
  color: #166534;
}

.domain-status--taken {
  background: #fee2e2;
  color: #991b1b;
}

.domain-status--invalid {
  background: var(--bg-gray);
  color: var(--text-secondary);
}

.domain-status--timeout {
  background: #ffedd5;
  color: #9a3412;
}

.domain-result-detail {
  color: var(--text-secondary);
  font-size: 13px;
}

.domain-result-action {
  font-size: 13px;
  font-weight: 600;
  color: var(--main-blue);
  white-space: nowrap;
}

.domain-result-action:hover {
  color: var(--light-blue);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 768px) {
  .domain-result-row {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
  }

  .domain-result-detail {
    grid-column: 1 / -1;
  }

  .domain-result-action {
    grid-column: 2;
    grid-row: 1;
  }
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.feature-item {
  padding: 20px;
  background: linear-gradient(145deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  transition: var(--transition);
}

.feature-item:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-soft);
  transform: translateY(-3px);
}

.feature-item h3 {
  font-size: 16px;
  color: var(--main-blue);
  margin-bottom: 8px;
}

.feature-item p {
  font-size: 14px;
  margin: 0;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  counter-reset: step;
}

.process-step {
  position: relative;
  padding: 20px 14px;
  text-align: center;
  background: var(--bg-gray);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.process-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--light-blue);
  margin-bottom: 8px;
}

.process-step strong {
  display: block;
  font-size: 14px;
  color: var(--main-blue);
  margin-bottom: 6px;
}

.process-step span {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.scenario-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.scenario-card {
  padding: 24px;
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--bg-white) 0%, var(--bg-blue-soft) 100%);
  border: 1px solid var(--border-color);
}

.scenario-card h3 {
  font-size: 16px;
  color: var(--main-blue);
  margin-bottom: 8px;
}

.scenario-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

.service-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.sidebar-card {
  background: linear-gradient(145deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
  margin-bottom: 20px;
}

.sidebar-card h3 {
  font-size: 17px;
  color: var(--main-blue);
  margin-bottom: 16px;
}

.sidebar-card ul li {
  margin-bottom: 10px;
}

.sidebar-card a {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.sidebar-card a:hover {
  color: var(--main-blue);
  padding-left: 4px;
}

.sidebar-card a::before {
  content: '›';
  color: var(--light-blue);
  font-weight: 700;
}

a.service-tag {
  text-decoration: none;
  transition: var(--transition);
}

a.service-tag:hover {
  background: var(--main-blue);
  color: #fff;
}

.series-children {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.series-child-link {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-white);
  transition: var(--transition);
}

.series-child-link:hover {
  border-color: var(--light-blue);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.series-child-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.series-child-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.series-child-text strong {
  font-size: 15px;
  color: var(--text-primary);
}

.series-child-text small {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.service-card h3 a,
.product-detail-head h3 a {
  color: inherit;
  text-decoration: none;
}

.service-card h3 a:hover,
.product-detail-head h3 a:hover {
  color: var(--main-blue);
}

.service-card ul li a {
  color: var(--text-secondary);
  font-size: inherit;
  transition: var(--transition);
}

.service-card ul li a:hover {
  color: var(--main-blue);
}

.service-cta-bar {
  margin-top: 48px;
  padding: 40px;
  border-radius: var(--radius);
  background: var(--gradient-hero);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.service-cta-bar h2 {
  font-size: 22px;
  color: #fff;
  margin: 0;
  border: none;
  padding: 0;
}

.service-cta-bar p {
  color: rgba(255, 255, 255, 0.85);
  margin: 8px 0 0;
  font-size: 15px;
}

.service-cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--main-blue);
  transition: var(--transition);
}

.service-card-link:hover {
  color: var(--light-blue);
  gap: 10px;
}

.service-card-link::after {
  content: '→';
}

.detail-card-link {
  display: block;
  color: inherit;
  height: 100%;
}

.detail-card-link:hover h4 { color: var(--light-blue); }

.detail-card--has-photo {
  padding: 0;
  overflow: hidden;
}

.detail-card-photo {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  margin-bottom: 0;
}

.detail-card--has-photo h4,
.detail-card--has-photo p {
  padding: 16px 24px 0;
}

.detail-card--has-photo p {
  padding-bottom: 24px;
}

/* ===== 法律文档（隐私政策等） ===== */
.legal-hero {
  position: relative;
  padding: 48px 0 56px;
  background: var(--gradient-hero);
  overflow: hidden;
}

.legal-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.6;
}

.legal-hero .container {
  position: relative;
  z-index: 1;
}

.legal-hero .breadcrumb a,
.legal-hero .breadcrumb span {
  color: rgba(255, 255, 255, 0.75);
}

.legal-hero .breadcrumb a:hover {
  color: var(--accent-cyan);
}

.legal-hero-inner {
  max-width: 720px;
}

.legal-hero-badge {
  display: inline-block;
  margin-bottom: 14px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
}

.legal-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--bg-white);
  margin: 0 0 14px;
  line-height: 1.25;
}

.legal-hero-lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
}

.legal-body {
  padding: 48px 0 80px;
  background: var(--bg-gray);
}

.legal-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: 96px;
  padding: 22px 18px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.legal-toc-title {
  margin: 0 0 14px;
  padding-bottom: 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--main-blue);
  border-bottom: 2px solid var(--bg-blue-soft);
}

.legal-toc nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.legal-toc a {
  display: block;
  padding: 8px 10px;
  font-size: 13px;
  line-height: 1.45;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
}

.legal-toc a:hover,
.legal-toc a.is-active {
  color: var(--main-blue);
  background: var(--bg-blue-soft);
  font-weight: 600;
}

.legal-main {
  min-width: 0;
}

.legal-intro {
  margin-bottom: 24px;
  padding: 28px 32px;
  background: linear-gradient(160deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.legal-intro p {
  margin: 0 0 14px;
  color: var(--text-secondary);
  line-height: 1.85;
}

.legal-intro p:last-child {
  margin-bottom: 0;
}

.legal-section {
  scroll-margin-top: 100px;
  margin-bottom: 20px;
  padding: 28px 32px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.legal-section h2 {
  margin: 0 0 16px;
  padding-bottom: 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--main-blue);
  border-bottom: 2px solid var(--bg-blue-soft);
}

.legal-section h3 {
  margin: 20px 0 10px;
  font-size: 16px;
  font-weight: 600;
  color: var(--assist-dark);
}

.legal-section h3:first-of-type {
  margin-top: 0;
}

.legal-section p {
  margin: 0 0 14px;
  color: var(--text-secondary);
  line-height: 1.85;
}

.legal-section p:last-child {
  margin-bottom: 0;
}

.legal-section ol {
  margin: 0;
  padding-left: 1.35em;
  color: var(--text-secondary);
  line-height: 1.85;
}

.legal-section ol li {
  margin-bottom: 10px;
}

.legal-section ol li:last-child {
  margin-bottom: 0;
}

.legal-section a {
  color: var(--main-blue);
  font-weight: 500;
}

.legal-section a:hover {
  color: var(--light-blue);
}

.legal-contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.legal-contact-cards li {
  padding: 16px 18px;
  background: var(--bg-blue-mist);
  border: 1px solid var(--border-light);
  border-radius: 10px;
}

.legal-contact-label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--main-blue);
  letter-spacing: 0.04em;
}

.legal-contact-cards a {
  font-size: 15px;
  font-weight: 600;
  word-break: break-all;
}

.legal-doc-foot {
  margin: 8px 0 0 !important;
  padding: 20px 24px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--assist-dark) !important;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

@media (max-width: 1024px) {
  .legal-layout {
    grid-template-columns: 1fr;
  }

  .legal-toc {
    position: static;
  }

  .legal-toc nav {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .legal-contact-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .legal-hero {
    padding: 40px 0 44px;
  }

  .legal-body {
    padding: 32px 0 56px;
  }

  .legal-intro,
  .legal-section {
    padding: 22px 20px;
  }

  .legal-toc nav {
    grid-template-columns: 1fr;
  }
}

.services-catalog {
  padding: 48px 0 80px;
}

.catalog-group {
  margin-bottom: 48px;
}

.catalog-group h2 {
  font-size: 22px;
  color: var(--main-blue);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.catalog-item {
  display: block;
  padding: 24px;
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--bg-white) 0%, var(--bg-blue-mist) 100%);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.catalog-item:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-card);
}

.catalog-thumb {
  width: 100%;
  height: auto;
  aspect-ratio: 520 / 360;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 14px;
  display: block;
  border: 1px solid var(--border-color);
}

.catalog-item strong {
  display: block;
  font-size: 16px;
  color: var(--main-blue);
  margin-bottom: 6px;
}
.catalog-item span {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

@media (max-width: 1024px) {
  .service-hero-inner { grid-template-columns: 1fr; }
  .service-hero-media { max-width: 100%; justify-self: stretch; order: -1; }
  .service-grid-2 { grid-template-columns: 1fr; }
  .service-sidebar { position: static; }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .scenario-cards { grid-template-columns: repeat(2, 1fr); }
  .catalog-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-list { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .process-steps { grid-template-columns: 1fr 1fr; }
  .scenario-cards { grid-template-columns: 1fr; }
  .catalog-grid { grid-template-columns: 1fr; }
  .service-cta-bar { flex-direction: column; text-align: center; }
}